Decomposing the Iron Absorption Signal of the Ultra-Hot Jupiter WASP-76b Using 3D Monte-Carlo Radiative Transfer

Joost Wardenier - University of OxfordApr 6, 2021
Atmospheric characterization
Atmospheric theory
Instrumentation & Observational techniques
Ultra-hot Jupiters
Monte-Carlo radiative transfer
3D effects
Global circulation models
High-resolution spectroscopy
We present a novel framework for calculating high-resolution spectra of 3D exoplanet atmospheres. To this end, we feed the outputs of a non-grey global circulation model into a Monte-Carlo radiative transfer code. Our simulations demonstrate that 3D effects (i.e. spatial variations in temperature, chemistry and dynamics) cannot be neglected when ...
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Ignas SnellenApr 7, 2021
Thanks Joost -great stuff!Reply
Ignas SnellenApr 7, 2021
Wonderful talk, Joost! I have two questions, if I may: 1. So in the end, do you need iron to rain out to explain the data, or is the change in scale height enough? 2. The scale height/temperature seems to drop quite suddenly at the terminator. Does your model framework take into account that the star is very large on the sky (30 degrees?). It means that at the terminator, half of the star is visible (as always) and that part of the star is still visible quite far on the night side (and parts of the star starts to vanish from view already on the dayside). We have been thinking a lot about these things as well here in Leiden :-) Cheers, IgnasReply